Correct me if I'm wrong, and it has been a while since I actually took notice of this, but the R32's run the orange mark at -5deg.
I know you have a 33 but is it possible you have a 32 balancer or something silly like that?
Therefore the second mark from the left is actually 0.
Like I said, it's been a while but I'm fairly sure this is the case and from memory I read it in the 32 manual also.